I didn't expect GOW2 to perform so well in the very first days but I was sure it would be better than R2.
R2 is good but nothing exceptional compared to GOW2 (especially from the graphical / animation side).
It is true that the release calendar is not favorable too (considering how Microsoft marketing protected GOW2 from other games. We all remember how the announcement of HALO 3 Recon was canceled at the E3...).
Sony really sucks at planning the release of the PS3 games apparently...or they don't consider R2 as a blockbuster for end of 2008.
So the results of R2 are quite honest to start with ...
Evan Wells (Uncharted 2): I think the differences that you see between any two games has much more to do with the developer than whether it’s on the Xbox or PS3.